I liked it online, but haven't played for awhile. Back in the first couple weeks it was out, there were over a hundred or so people playing at peak times. Has that changed?
The tournament mode is pretty fun, the only new wrinkle is that you have to be able to play relatively fast, with a 90 or 60 second limit on each hole. I never did play a player match, where you wait & watch for everyone to take turns, kind of like really playing somebody on the same PS2. That mode is limited to 4 people.
No voice headset support kind of detracted from the online experience a bit.